Growing Chlorella vulgaris in Photobioreactor by Continuous Process Using Concentrated Desalination: Effect of Dilution Rate on Biochemical Composition
Desalination wastewater, which contains large amount of salt waste, might lead to severely environmental pollution. This study evaluated the effect of dilution rate (0.1≤D≤0.3 day−1) on microalgal biomass productivity, lipid content, and fatty acid profile under steady-state condition of Chlorella v...
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Wiley
2014-01-01
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| Series: | International Journal of Chemical Engineering |
| Online Access: | http://dx.doi.org/10.1155/2014/310285 |
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| author | Ângelo Paggi Matos Regina Coeli de Oliveira Torres Luiz Rodrigo Ito Morioka Elisa Helena Siegel Moecke Kepler Borges França Ernani Sebastião Sant’Anna |
| author_facet | Ângelo Paggi Matos Regina Coeli de Oliveira Torres Luiz Rodrigo Ito Morioka Elisa Helena Siegel Moecke Kepler Borges França Ernani Sebastião Sant’Anna |
| author_sort | Ângelo Paggi Matos |
| collection | DOAJ |
| description | Desalination wastewater, which contains large amount of salt waste, might lead to severely environmental pollution. This study evaluated the effect of dilution rate (0.1≤D≤0.3 day−1) on microalgal biomass productivity, lipid content, and fatty acid profile under steady-state condition of Chlorella vulgaris supplemented with concentrated desalination. Continuous culture was conducted for 55 days. Results show that the biomass productivity (Px) varied from 57 to 126 mg L−1 d−1 (dry mass) when the dilution rate ranged from 0.1 to 0.3 day−1. At lowest dilution rate (D=0.1 day−1), the continuous culture regime ensured the highest values of maximum biomass concentration (Xm=570±20 mL−1) and protein content (52%). Biomass lipid content was an increasing function of D. The most abundant fatty acids were the palmitic (25.3±0.6%) at D=0.1 day−1 and the gamma-linolenic acid (23.5±0.1%) at D=0.3 day−1 ones. These fatty acids present 14 to 18 carbons in the carbon chain, being mainly saturated and polyunsaturated, respectively. Overall, the results show that continuous culture is a powerful tool to investigate the cell growth kinetics and physiological behaviors of the algae growing on desalination wastewater. |
| format | Article |
| id | doaj-art-0551bd34aa5d40e682f52cb11e9cc9c9 |
| institution | Kabale University |
| issn | 1687-806X 1687-8078 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Chemical Engineering |
| spelling | doaj-art-0551bd34aa5d40e682f52cb11e9cc9c92025-02-03T05:45:51ZengWileyInternational Journal of Chemical Engineering1687-806X1687-80782014-01-01201410.1155/2014/310285310285Growing Chlorella vulgaris in Photobioreactor by Continuous Process Using Concentrated Desalination: Effect of Dilution Rate on Biochemical CompositionÂngelo Paggi Matos0Regina Coeli de Oliveira Torres1Luiz Rodrigo Ito Morioka2Elisa Helena Siegel Moecke3Kepler Borges França4Ernani Sebastião Sant’Anna5Department of Food Science and Technology, Federal University of Santa Catarina, Avenue Admar Gonzaga 1346, Itacorubi, 88034-001 Florianopolis, SC, BrazilDepartment of Food Science and Technology, Federal University of Santa Catarina, Avenue Admar Gonzaga 1346, Itacorubi, 88034-001 Florianopolis, SC, BrazilDepartment of Food Science and Technology, Federal University of Santa Catarina, Avenue Admar Gonzaga 1346, Itacorubi, 88034-001 Florianopolis, SC, BrazilDepartment of Food Science and Technology, Federal University of Santa Catarina, Avenue Admar Gonzaga 1346, Itacorubi, 88034-001 Florianopolis, SC, BrazilDepartment of Chemical Engineering, Federal University of Campina Grande, Avenue Aprigio Veloso 882, Bodocongo, 58429-170 Campina Grande, PB, BrazilDepartment of Food Science and Technology, Federal University of Santa Catarina, Avenue Admar Gonzaga 1346, Itacorubi, 88034-001 Florianopolis, SC, BrazilDesalination wastewater, which contains large amount of salt waste, might lead to severely environmental pollution. This study evaluated the effect of dilution rate (0.1≤D≤0.3 day−1) on microalgal biomass productivity, lipid content, and fatty acid profile under steady-state condition of Chlorella vulgaris supplemented with concentrated desalination. Continuous culture was conducted for 55 days. Results show that the biomass productivity (Px) varied from 57 to 126 mg L−1 d−1 (dry mass) when the dilution rate ranged from 0.1 to 0.3 day−1. At lowest dilution rate (D=0.1 day−1), the continuous culture regime ensured the highest values of maximum biomass concentration (Xm=570±20 mL−1) and protein content (52%). Biomass lipid content was an increasing function of D. The most abundant fatty acids were the palmitic (25.3±0.6%) at D=0.1 day−1 and the gamma-linolenic acid (23.5±0.1%) at D=0.3 day−1 ones. These fatty acids present 14 to 18 carbons in the carbon chain, being mainly saturated and polyunsaturated, respectively. Overall, the results show that continuous culture is a powerful tool to investigate the cell growth kinetics and physiological behaviors of the algae growing on desalination wastewater.http://dx.doi.org/10.1155/2014/310285 |
| spellingShingle | Ângelo Paggi Matos Regina Coeli de Oliveira Torres Luiz Rodrigo Ito Morioka Elisa Helena Siegel Moecke Kepler Borges França Ernani Sebastião Sant’Anna Growing Chlorella vulgaris in Photobioreactor by Continuous Process Using Concentrated Desalination: Effect of Dilution Rate on Biochemical Composition International Journal of Chemical Engineering |
| title | Growing Chlorella vulgaris in Photobioreactor by Continuous Process Using Concentrated Desalination: Effect of Dilution Rate on Biochemical Composition |
| title_full | Growing Chlorella vulgaris in Photobioreactor by Continuous Process Using Concentrated Desalination: Effect of Dilution Rate on Biochemical Composition |
| title_fullStr | Growing Chlorella vulgaris in Photobioreactor by Continuous Process Using Concentrated Desalination: Effect of Dilution Rate on Biochemical Composition |
| title_full_unstemmed | Growing Chlorella vulgaris in Photobioreactor by Continuous Process Using Concentrated Desalination: Effect of Dilution Rate on Biochemical Composition |
| title_short | Growing Chlorella vulgaris in Photobioreactor by Continuous Process Using Concentrated Desalination: Effect of Dilution Rate on Biochemical Composition |
| title_sort | growing chlorella vulgaris in photobioreactor by continuous process using concentrated desalination effect of dilution rate on biochemical composition |
| url | http://dx.doi.org/10.1155/2014/310285 |
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